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It is not actually divided into layers by nature. It is a constantly changing mass of gasses with water in suspension with different temperatures and pressures constantly changing their relationship with one another. The notion of layers is only a human tool, a model, to help us understand it better. The first layer, the one which holds all terrestrial life, is the troposphere.

Then there is the stratosphere, mesosphere, thermosphere, and exosphere.

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11y ago
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14y ago

four regions: the troposphere, the stratosphere, mesosphere, and the thermosphere. The outer most layer is the exosphere.

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13y ago

Temperature or latitude

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Q: How is the earth's atmosphere divided into layers?
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